Method for preparing activated carbon from penicillin or terramycin strain residues

A technology for preparing activated carbon and oxytetracycline, applied in chemical instruments and methods, non-metallic elements, solid waste removal, etc., can solve problems such as high cost and shortage of raw materials, and achieve good environmental and social benefits.

Active Publication Date: 2012-06-20
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the raw materials for preparing activated carbon in the world are mainly woody raw materials and mineral r...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Oxytetracycline bacterium slag is pulverized, crosses 20 mesh sieves, then activator potassium carbonate (K 2 CO 3 ) and fungus slag in a mass ratio of 1:3, mix them uniformly in an aqueous solution, soak them in a constant temperature water bath at 40°C for 24 hours, then place them in an oven and dry them at 105°C to 110°C (with a double-layer crucible lid , to prevent oxidation) into the muffle furnace, heated to 800 ° C at this temperature for 3 hours.

[0021] The above-mentioned activated fungus residue is acid-washed with hydrochloric acid, then washed with water until neutral, dried at 105-110°C for 2-3 hours, and cooled to room temperature to obtain the fungus-residue activated carbon. The iodine value of activated carbon prepared under these conditions is 1003 mg / g, the adsorption value of methylene blue is 117 mg / g, and the specific surface area is 1593 m 2 / g, the yield was 20.6%.

Embodiment 2

[0023] Crush the oxytetracycline bacteria residue, pass through a 20-mesh sieve, then mix the activator K2CO3 and the bacteria residue in an aqueous solution at a mass ratio of 1:3, soak in a constant temperature water bath at 40°C for 24 hours, and then place in an oven After drying at 105°C to 110°C (covered with a double-layer crucible cover to prevent oxidation), put it into a muffle furnace, raise the temperature to 700°C and keep the temperature at this temperature for 3 hours. The above-mentioned activated fungus residue is acid-washed with hydrochloric acid, then washed with water until neutral, dried at 105-110°C for 2-3 hours, and cooled to room temperature to obtain the fungus-residue activated carbon. The activated carbon prepared under this condition has an iodine value of 685.4 mg / g, a methylene blue adsorption value of 51 mg / g, a specific surface area of ​​560.3 m2 / g, and a yield of 25.7%.

Embodiment 3

[0025] The oxytetracycline slag is pulverized, passed through a 20-mesh sieve, and then the activator K 2 CO 3 According to the mass ratio of 1:4, mix them evenly in the aqueous solution, soak in a constant temperature water bath at 40°C for 24 hours, and then place them in an oven to dry at 105°C to 110°C (with a double-layer crucible cover, To prevent oxidation) into a muffle furnace, the temperature was raised to 800° C. and kept at this temperature for 3 hours. The above-mentioned activated fungus residue is acid-washed with hydrochloric acid, then washed with water until neutral, dried at 105-110°C for 2-3 hours, and cooled to room temperature to obtain the fungus-residue activated carbon. The iodine value of activated carbon prepared under these conditions is 761.45mg / g, the methylene blue adsorption value is 60mg / g, and the specific surface area is 1071.454m 2 / g, the yield was 21.3%.

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Abstract

The invention discloses a method for preparing activated carbon from penicillin or terramycin strain residues. The method comprises the steps of: crushing strain residues, sieving by a 20-meshed sieve, uniformly mixing the strain residues with a solution prepared according to different activation ratios, soaking at a constant temperature for 24 hours, drying in an oven at the temperature of 105-110 DEG C, placing in a temperature resistant sealed container to prevent oxidization and incineration, placing the sealed container in an activating and carbonizing furnace, heating to an activation temperature, activating at the constant temperature for set time, washing the activated strain residues with hydrochloric acid, then washing with water to be neutral, drying at the temperature of 105-110 DEG C for 2-3 hours, and cooling to room temperature to obtain the strain residue activated carbon. According to the invention, prepared activated carbon is high in specific area, rich in micropores and mesopores and excellent in adsorbing performance; and waste terramycin strain residues from a pharmaceutical factory are utilized to prepare activated carbon, thus the resource, reduction and harmless treatment of the waste strain residues are effectively realized, and the social benefit is significant.

Description

technical field [0001] The invention relates to a method for preparing activated carbon from penicillin or oxytetracycline scum. Background technique [0002] In 2009, my country's antibiotic output and export volume were 147,000 tons and 25,000 tons respectively, ranking first in the world (currently, the global annual output of antibiotics is about 200,000 tons). From 2000 to 2009, the production of antibiotics in my country increased by about 5 times. If these waste fungus residues are stored at high temperature and for a long time, they will produce unpleasant odors, and even autolysis, causing serious environmental pollution. In the past, it has been used as feed or feed additive after drying and processing. Since 2002, the Ministry of Agriculture Announcement No. 176 "Catalogue of Drugs Prohibited in Feed and Animal Drinking Water" prohibits the use of antibiotic residues as feed or feed additives. If such a huge amount of fungal residue is not properly disposed of,...

Claims

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Application Information

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IPC IPC(8): C01B31/12B09B3/00C01B32/324C01B32/348
Inventor 周保华郭斌高勤贡丽鹏
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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